Device for the stepwise displacement of working parts for brush manufacturing machines

ABSTRACT

The invention pertains to a device for the stepwise displacement of a working part holder with brush manufacturing machines, characterized by the fact that it consists mainly of a combination of a first or driving lever; a second or driving lever of which the extreme displacement is communicated directly or indirectly to the above mentioned working part holder; connected easily hingeable with the above mentioned second lever, a third lever; at each end of the latter a fourth connected and hinged to it, also a fifth lever and on the above mentioned first lever pins or similar which can be placed independently of one another and in any suitable combination under one or given extremities of one or the directly or indirectly located levers on the above mentioned second lever.

United States Patent Boucherie MACHINES [75] inventor: Lionel P. Boucherie, Rumbeke.

Belgium [73] Assignee: Firma G. B. Boucherie, Rumbcke,

Belgium [22] Filed: Mar. 26, 1974 [21] Appl. No.: 454,933

[30] Foreign Application Priority Data Apr, 13, 1973 Belgium 798164 [52] US. Cl 74/116; 74/5l9 [5 1] Int. Cl. Fi6h 29/00 [58] Field of Search 300/10, ll, 3; 74/] i2, 74/116, I42, I57, 519,119

[56] References Cited UNITED STATES PATENTS 2,933,931 4/[960 Lisinski 74/l l6 X [I11 3,896,678 [451 July 29, 1975 Primary ExaminerSamuel Scott Assistant Examiner-Frank H. McKenzie, Jr. Attorney. Agent, or Firm-Browdy and Neimark [57] ABSTRACT The invention pertains to a device for the stepwise displacement of a working part holder with brush manufacturing machines. characterized by the fact that it consists mainly of a combination of a first or driving lever; a second or driving lever of which the extreme displacement is communicated directly or indirectly to the above mentioned working part holder; connected easily hingeable with the above mentioned second lever, a third lever; at each end of the latter a fourth connected and hinged to it, also a fifth lever and on the above mentioned first lever pins or similar which can be placed independently of one another and in any suitable combination under one or given extremities of one or the directly or indirectly located levers on the above mentioned second lever.

12 Claims, 4 Drawing Figures PATENTED JUL 2 91975 SHEET PATENTED JUL 2 9 I975 SEEET 1 DEVICE FOR THE STEPWISE DISPLACEMENT OF WORKING PARTS FOR BRUSH MANUFACTURING MACHINES FIELD OF THE INVENTION This invention concerns a device for the stepwise displacement of brush manufacturing machine working parts, and more especially the so-called drilling and/or filling machines.

BACKGROUND OF THE INVENTION Devices for the displacement of the above mentioned working parts are already known, but they all present the great drawback of being very bulky and in many cases complicated and expensive, while the operating safety is frequently unsatisfactory, and whereby these devices always have a great mass due to which the velocity and output of the machine are restricted.

SUMMARY This invention concerns an apparatus which is extremely simple; of which the number of components is really minimal with regard to the result achieved; the bulk of which is very small; and with which an arithmetical series of displacements can be obtained in a simple and fast manner with safety of operation, for which only a few components need to be displaced over a very small distance.

Such a device according to the invention, which presents the above mentioned and other features so far consists mainly of the combination of a first or driving lever; a second or driven lever the ultimate displacement of which is communicated directly or indirectly to the above mentioned workpiece holder; articulated with the above mentioned second lever, a third lever; at least at one end of the latter an articulated fourth and eventually a fifth lever; motionless with regard to the above mentioned first and second levers and support for the extremities of the fourth and third or eventually fifth levers, and on the above mentioned first lever pins or similar, which can be brought from one or the levers placed directly or indirectly on the above mentioned second lever, independent of one another and in any suitable combination under one or specific extremities.

BRIEF DESCRIPTION OF THE DRAWING In order better to demonstrate the characteristics of the device, a couple of embodiments are described below, as an example and by no means limitative, with reference to the attached drawings where:

FIG. 1 reproduces a perspective view of a device according to the invention;

FIG. 2 is a view similar to that of FIG. 1, but for a more extended construction;

FIG. 3 gives a side view of a form of construction according to the principle as shown in FIG. 2;

FIG. 4 reproduces a horizontal section at various levels along line 44 of FIG. 3, through the main parts of the device as reproduced in FIG. 3;

DETAILED DESCRIPTION In FIG. I a device is reproduced according to the invention which enables the right displacement to be given to a working part, in this case a brush body, so as to drill it at the proper point or to fill it with bundles of fibres. The design is intended for simple forms of brushes, and more especially for practically straight brush shapes, so that the number of displacements of the brush bodies can remain limited to seven. This apparatus consists mainly of two levers I and 2 each of which is placed so as to oscillate in this case on a common spindle. Lever I is moved continuously to and fro with, as its point of oscillation, spindle 3 by means, for instance of a cam or similar, while lever 2 is connected at its free end with a mechanism which in turn is connected with a working piece holder of a brush manufacturing machine, such as a drilling or filling machine. In this example this mechanism is formed by a pawl with pawl wheel.

Pins are connected to lever I at well defined distances between one another, in this case three, i.e., 4 and 5 and 6 which are axially slidable and of which in this case pin 6 is longer than pins 4 and 5. The distances between these pins are a and 2a as shown in FIG. 1, pin 4 being located at a distance from spindle 3 which is likewise equal to a.

A spindle 7 is connected with lever 2, a third lever 8 being mounted thereon; the latter is rotatable and is provided at one end with a spindle 9 and at its other end 10 preferably pushed downwards in order to ensure that the lowest portion of this extremity is formed by an imaginary line.

A fourth lever 11 is connected and hinged to spindle 9; at each end, 12 and 13 respectively it is preferably bent downwards.

Clearly, the ends of the levers in question can be provided with thick cylindrical parts with the same result, or else small wheels can be mounted on these extremities.

The lowest parts of the downwards directed ends l0, l2 and 13 are placed in such a way that the imaginary lines of ends 12 and 13 are located at a distance equal to a, the lowest portion of the extremity 12, which is bent downwards, being located at distance a from spindle 3.

The distance between spindles 7 and 9 will be equal to half the distance from spindle 7 to the imaginary line of the lowest portion of extremity 10, while the distance from spindle 7 to spindle 3 will preferably be equal to the distance from spindle 7 to the attachment of lever 2 with the mechanism which itself is connected to the working piece holder.

Spindle 3 is housed in the stand of the machine with which a plate 14 is connected on which the free extremities I0, 12 and 13 of levers 8 and II are sup ported. These levers, or at least their ends, are widened in such a way as to lie only partly on support 14 and to protrude beyond that support.

If in this position lever l is subjected to a rocking motion around spindle 3 lever 2 will remain motionless.

However, if one or more of pins 4 to 6 are brought under one of the extremities concerned of lever 8 and- /or 11, the result is a certain displacement of the free end of lever 2, whereby through the arrangement selected in this construction, the displacements of this latter free end form approximately an arithmetical series with seven different possibilities.

Since in practice many advantages are offered if a purely arithmetical series of displacements of lever 2 is made available, the different measurements of the levers will usually be adjusted in order to obtain this purely arithmetical series of displacements.

In effect, if pin 4 is pushed out, or in other words is brought under extremity 12 of lever ll, upon the upward motion of lever I this pin will cause lever II to tilt over. with extremity 13 as center of rotation, whereby spindle 9 is given a certain upward motion so that lever 8 also obtains a rocking motion around end 10 which finally produces a certain displacement of lever 2. The same effect is obtained. but with extremity 12 as centre of rotation, if pin is brought under extremity 13 of lever ll, while if pin 6 is brought under end of lever 8, the latter will rotate with spindle 9 as centre of rotation, likewise causing a certain displacement of lever 2. By bringing one or more of pins 4,5 or 6 under a lever or levers, in an appropriate manner, a suitable displacement is then obtained of lever 2.

It is obvious that in this way an arithmetical or neararithmetical series of seven displacements is obtained with a device which is very simple and which consists of the minimum number of components, so that there is maximum safety of operation. The pushing in and out of pins 4 to 6 can be effected in any suitable manner by means of electromagnetically actuated small pressure cylinders, etc.

The contact surface of pins 4, 5 and 6 with the levers will preferably be flat in order to ensure a permanent and correct contact in each position of the levers in question. With this in view, these pins will preferably be at least partly square for instance.

As shown in the drawings, care will be taken to ensure that the axis lines of spindles 3, 7 and 9 are located in one and the same plane, as well as the contact lines of levers 8 and 11 and the contact surfaces of pins 4, 5 and 6.

FIG. 2 shows in diagram form a construction variant of an apparatus according to FIG. 1, with which it is possible to obtain fifteen displacements of the free end of lever 2, this device being used when it is a case of having to drill or fill brushes of a fairly intricate shape. Here too, we have levers l and 2 again, together with levers 8 and I1, although there is also a third lever 15 the extremities I6 and 17 of which are bent downwards and which in the middle of its length is attached so as to be easily rotated on a spindle 18 which in turn is fastened onto the end of lever 8. In this case too a further pin 19 is provided which is able to operate together with end 16 of lever 15.

In this case pin 4 is located at distance b from spindle 3 and the distances separating pins 4-5, 5-19 and 19-6 from one another are equal to b, 217, and 4b. The distance between the lowest parts of bent down ends l2-l3 of lever 11 is in this case equal to b, this lever being fastened halfway up its length to spindle 9, and in this case the distance from spindle 9 to spindle 7 and the distance from spindle I8 to spindle 7 are equal to each other.

Obviously, according to the pin or combination of pins placed under the ends oflevers 11 and 15, the displacement obtained of the free end of lever 2 will differ, the maximum number ofdifferent displacements of such device being equal to fifteen.

In order to obtain a purely arithmetical series of dis placements, the various relations of the levers will have to be adjusted in this case likewise.

In these constructions too pins 4, 5, 6 and I9 must have at least one flat portion forming the contact surface with the lever extremities concerned and spindles 3, 7, 9 and 18 will be located in the same plane. together with the contact surfaces of pins 4, 5, 6 and I9 and the contact lines of levers II and 15.

FIGS. 3 and 4 show a form of construction of a device according to the invention which enables fifteen displacements to be obtained. these FIGS. 3 and 4 showing the same components and having the same reference numbers as those used in FIGS. 1 and 2. Lever l is in this design made for instance of several parts, in the present case in fact four main parts, 20, 21, 22 and 23 respectively, in which the above mentioned pins 4, 5, 6 and 19 are provided, these pins being fitted in this case with small pistons 24, 25, 26 and 27 respectively, the displacement of which can be controlled by means of compressed air or similar. and for which connecting screw wire holes are provided, 27, 28, 29 and 30 respectively.

In this design it is ensured, among other things, that the centres of spindles 3, 7, 9 and 18, together with the centres of the arcs defining the bent ends of levers I1, 15 and/or 8 are located in one and the same plane X-Y.

The present invention is by no means restricted to the constructions described as examples and reproduced in the attached drawings; this device can be made in all sorts of shapes and measurements without exceeding the scope of the invention.

What I claim is:

l. A device for stepped displacement of a working part holder comprising:

a support plate;

a spindle mounted on said support plate;

a first lever rotatably mounted on one end thereof upon said spindle and connected at the opposite end thereof to a means for imparting oscillatory motion to said first lever;

a second lever rotatably mounted on one end thereof to said spindle substantially adjacent said first lever, and connected at the opposite end thereof to the working part holder;

at third lever, having first and second ends, rotatably mounted by mounting means to substantially the mid-point of said second lever;

a fourth lever, having first and second ends, rotatably mounted by mounting means at substantially the mid-point thereof to said first end of said third lever;

a plurality of independently selectively extensible pins slidably mounted on said first lever to allow axial extension of said pins;

a contact surface on each said pin; and,

means, at the second end of said third lever and the first and second ends of said fourth lever, for engaging the support plate and for engaging respective ones of said contact surfaces when selective ones of the said pins are extended and the said first lever is oscillated.

2. Device according to claim I, wherein the said levets are substantially parallel to one another.

3. Apparatus of claim I, wherein said extensible pins comprise:

a first pin mounted on said first lever;

a second pin mounted on said first lever;

a third pin mounted on said first lever;

said second pin being mounted at a position midway between said third pin and said spindle; and,

said first pin being mounted at a position midway between said second pin and said spindle.

4. Apparatus of claim I, wherein said third lever mounting means and said fourth lever mounting means have axes located in one and the same plane.

5. Apparatus of claim 1, wherein the lever arms of the said third lever are to each other substantially as two is to one. the fourth lever being attached in a rocking capacity to the shortest lever arm.

6. Apparatus of claim 1 wherein:

said engaging means at the second end of said third lever comprises,

a fifth lever, having first and second ends, rotatably mounted at substantially the mid-point thereof by mounting means to the second end of the said third lever. and with means at the first and second ends thereof for engaging said support plate and respective ones of said contact surfaces.

7. Apparatus of claim 6 wherein the said levers are substantially parallel to each other.

8. Apparatus of claim 6, wherein said extensible pins comprise:

a first pin mounted on said first lever;

a second pin mounted on said first lever;

a third pin mounted on said first lever;

a fourth pin mounted on said first lever;

said third pin being mounted at a position midway between said fourth pin and said spindle;

said second pin being mounted at a position midway between said third pin and said spindle; and,

said first pin being mounted at a position midway between said second pin and said spindle.

9. Apparatus of claim 6, wherein said third lever mounting means, said fourth lever mounting means and said fifth mounting means are located in one and the same plane.

10. Apparatus of claim 6, wherein said contact surfaces are located in one and the same plane.

11. Apparatus of claim 6, wherein said fifth lever has a length which is substantially equal to four times the length said fourth lever, whereby the centers of rotation of said fourth and fifth levers are located substantially 4 /2 times the length of the fourth lever from each other.

12. Apparatus of claim 1, wherein the contact surfaces of the said pins are located in one and the same plane. 

1. A device for stepped displacement of a working part holder comprising: a support plate; a spindle mounted on said support plate; a first lever rotatably mounted on one end thereof upon said spindle and connected at the opposite end thereof to a means for imparting oscillatory motion to said first lever; a second lever rotatably mounted on one end thereof to said spindle substantially adjacent said first lever, and connected at the opposite end thereof to the working part holder; a third lever, having first and second ends, rotatably mounted by mounting means to substantially the mid-point of said second lever; a fourth lever, having first and second ends, rotatably mounted by mounting means at substantially the mid-point thereof to said first end of said third lever; a plurality of independently selectively extensible pins slidably mounted on said first lever to allow axial extension of said pins; a contact surface on each said pin; and, means, at the second end of said third lever and the first and second ends of said fourth lever, for engaging the support plate and for engaging respective ones of said contact surfaces when selective ones of the said pins are extended and the said first lever is oscillated.
 2. Device according to claim 1, wherein the said levers are substantially parallel to one another.
 3. Apparatus of claim 1, wherein said extensible pins comprise: a first pin mounted on said first lever; a second pin mounted on said first lever; a third pin mounted on said first lever; said second pin being mounted at a position midway between said third pin and said spindle; and, said first pin being mounted at a position midway between said second pin and said spindle.
 4. Apparatus of claim 1, wherein said third lever mounting means and said fourth lever mounting means have axes located in one and the same plane.
 5. Apparatus of claim 1, wherein the lever arms of the said third lever are to each other substantially as two is to one, the fourth lever being attached in a rocking capacity to the shortest lever arm.
 6. Apparatus of claim 1 wherein: said engaging means at the second end of said third lever comprises, a fifth lever, having first and second ends, rotatably mounted at substantially the mid-point thereof by mounting means to the second end of the said third lever, and with means at the first and second ends thereof for engaging said support plate and respective ones of said contact surfaces.
 7. Apparatus of claim 6 wherein the said levers are substantially parallel to each other.
 8. Apparatus of claim 6, wherein said extensible pins comprise: a first pin mounted on said first lever; a second pin mounted on said first lever; a third pin mounted on said first lever; a fourth pin mounted on said first lever; said third pin being mounted at a position midway between said fourth pin and said spindle; said second pin being mounted at a position midway between said third pin and said spindle; and, said first pin being mounted at a position midway between said second pin and said spindle.
 9. Apparatus of claim 6, wherein said third lever mounting means, said fourth lever mounting means and said fifth mounting means are located in one and the same plane.
 10. Apparatus of claim 6, wherein said contact surfaces are located in one and the same plane.
 11. Apparatus of claim 6, wherein said fifth lever has a length which is substantially equal to four times the length said fourth lever, whereby the centers of rotation of said fourth and fifth levers are located substantially 4 1/2 times the length of the fourth Lever from each other.
 12. Apparatus of claim 1, wherein the contact surfaces of the said pins are located in one and the same plane. 